I've said it before and I'll say it again.
Dracula, Werewolf By Night, Frankenstein's Monster and Living Mummy could be evergreen characters for ML. Change the paint scheme, add a new head sculpt and re-sell them the next year. Sell them individually at big box stores and put them in the Halloween sections. Partner with Hot Topic and Spirit Halloween.
Universal monster collectors would be all over this. The four characters I mentioned are really just riffs on the classic films, and Universal collectors buy anything and everything that resembles these icons. Horror collectors would "bite".
Add in other characters like Manphibian and Lilith Drake.
Add in Simon Garth and any zombified Marvel character.
Add in Agatha Harkness and other witches.
Add in S'ym and other demons.
Add in any monstrous looking characters that fit the Halloween theme - Gargoyle, Venom, etc.
If Star Wars can do Reindeer Stormtroopers and Cupid Ewoks at Target and Wally, Marvel could certainly do classic Colan inspired Dracula.